What happens to the floor of the shelter if its placed on someones lawn and they drive a car in?
Nothing, the floor can handle a car on concrete, grass field or sand, any surface on which you can drive a car. I would draw the line at deep or rutted mud. Is the shelter waterproof? Waterproof seam areas? How does the shelter hold up in heavy rain? Yes. Shingled seams. Holds up very well to heavy rain. However, cannot be put in a puddle without water coming in floor vents. We recommend the ShelteX model for severe weather service because of the hermetically sealed seams. ( Severe weather is “driving rain and wind for extended periods of time”) Does the floor have any sort of extra coating to maintain dryness (i.e. polyurethane)? This is plastic. It does not absorb water. See material specs. Are stress areas re-inforced to minimize tension? The shelter design distributes stress over entire surface. Corners are radiused to relieve stress risers and avoid rips. Rivets reinforce high stress areas. Are the sides translucent or do they stop the light from coming through? You cannot see thr